Originally Posted by sculptingman

What problems have you seen to make this recommendation?
i have a converted Spot Ajax... Aluminum frame and carbon fork... With a 750 BB motor...
Thus far I have noted significantly less frame deflection than the pre-converted setup simply because the crank is no longer part of the chainring/spider. That is...the torque of my pedaling is filtered thru the motor gearing resulting in much smoother power and what LOOKS like a lot less stress on the frame...

but then, I have not been running it long... Are there going to be problems I am not foreseeing?
( the Ajax frame has been certified for Gates Belt drive, so I know its rear triangle has been engineered for very low deflection )